Building a perfectly spherical world

EDIT: Question has been altered significantly in terms of design (originally having been a 'what-if'). This should (hopefully) accommodate more grounded and specific answers.

Science often prefers to view the planets as perfect spheres, for the sake of simplicity of calculation. From a scientific perspective, how realistic is such a design?

Some questions that might be used as guidelines for your answer below:

1. Mathematically, can this be written off as feasible? Would the laws of physics conspire to create fundamentally different properties inherent to the planet than those typically seen anywhere else in the universe?
2. How would natural processes be likewise affected by a spherical planet? ex. geological phenomena, magnetic poles, and so forth.
3. What would the lifespan of such a planet be, as a perfectly spherical object?

posted almost 9 years ago

Avant Guard‭

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